diff --git a/src/stubser/stubser.c b/src/stubser/stubser.c
index 504fb52..4d1a7a3 100644
--- a/src/stubser/stubser.c
+++ b/src/stubser/stubser.c
@@ -600,34 +600,72 @@ STATIC int8_t createStubFunctionBlock(FILE *aFile, FILE *aHeader, cfunction_t *a
    fprintf(aFile, "\t{" NEWLINES);
    fprintf(aFile, "\t\tCU_FAIL_FATAL(\"init_%s() - "STUBINIT_PARAM_INSTANCE_S" out of bounce\");" NEWLINES, aFunction->name);
    fprintf(aFile, "\t}" NEWLINES);
+   // setting parameter
    fprintf(aFile, "\t"STUBINSTANCE_S1" = 0;" NEWLINES, aFunction->name);
    fprintf(aFile, "\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_CALLTEST_S" = "STUBINIT_PARAM_CALLTEST_S";" NEWLINES,
          aFunction->name);
+
+   // if STUB_CALL_PASS is requested init with parameter
+   fprintf(aFile, "\tif ( STUB_CALL_PASS  == " STUBINIT_PARAM_CALLTEST_S ")" NEWLINES "\t{" NEWLINES);
    if (pointerAvailable)
    {
       fprintf(aFile,
-            "\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_POINTERHANDLING_S" = "STUBINIT_PARAM_POINTERHANDLING_S";" NEWLINES,
+            "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_POINTERHANDLING_S" = "STUBINIT_PARAM_POINTERHANDLING_S";" NEWLINES,
             aFunction->name);
    }
    if (!isDatatypeVoid(aFunction->dataType))
    {
-      fprintf(aFile, "\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_RETURN_S" = "STUBINIT_PARAM_RETURN_S";" NEWLINES,
+      fprintf(aFile, "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_RETURN_S" = "STUBINIT_PARAM_RETURN_S";" NEWLINES,
             aFunction->name);
    }
    parameter = aFunction->parameter.head;
    parameterIndex = 'a';
    while (parameter)
    {
-      fprintf(aFile, "\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_PARAM_S1" = "STUBINIT_PARAM_PARAMETER_S1";" NEWLINES,
+      fprintf(aFile, "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_PARAM_S1" = "STUBINIT_PARAM_PARAMETER_S1";" NEWLINES,
             aFunction->name, parameterIndex, parameterIndex);
       if ((NULL != strstr(parameter->dataType, "*") || parameter->array) && CPARAMETER_TYPE_FUNCPTR != parameter->type)
       {
-         fprintf(aFile, "\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_PARAM_S1"_size = "STUBINIT_PARAM_PARAMETER_S1"_size;" NEWLINES,
+         fprintf(aFile,
+               "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_PARAM_S1"_size = "STUBINIT_PARAM_PARAMETER_S1"_size;" NEWLINES,
                aFunction->name, parameterIndex, parameterIndex);
       }
       ++parameterIndex;
       parameter = parameter->next;
    }
+   fprintf(aFile, "\t}" NEWLINES);
+   // if STUB_CALL_FAIL is requested init with default parameter
+   fprintf(aFile, "\telse" NEWLINES "\t{" NEWLINES);
+   if (pointerAvailable)
+   {
+      fprintf(aFile,
+            "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_POINTERHANDLING_S" = "STUBPARAMETER_POINTERHANDLING_ADDRESS_S";" NEWLINES,
+            aFunction->name);
+   }
+   parameter = aFunction->parameter.head;
+   parameterIndex = 'a';
+   while (parameter)
+   {
+      // initialize _size parameter to 1 (default to check addresses)
+      if (CPARAMETER_TYPE_FUNCPTR != parameter->type && (parameter->array || NULL != strstr(parameter->dataType, "*")))
+      {
+         fprintf(aFile, "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_PARAM_S1" = (%s) "STUBDEFAULT_VALUE_POINTER_S";" NEWLINES,
+               aFunction->name, parameterIndex, parameter->dataType);
+         fprintf(aFile,
+               "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_PARAM_S1"_size = "STUBDEFAULT_VALUE_POINTERSIZE_S";" NEWLINES,
+               aFunction->name, parameterIndex);
+      }
+      else
+      {
+         fprintf(aFile, "\t\t"STUBPARAMETER_STRUCT_S1"["STUBINIT_PARAM_INSTANCE_S"]."STUBPARAMETER_PARAM_S1" = (%s) "STUBDEFAULT_VALUE_VARIABLE_S";" NEWLINES,
+               aFunction->name, parameterIndex, parameter->dataType);
+      }
+
+      ++parameterIndex;
+      parameter = parameter->next;
+   }
+   fprintf(aFile, "\t}" NEWLINES);
+
    fprintf(aFile, "}" NEWLINES);
    NEWLINE(aFile);
 
@@ -658,7 +696,8 @@ STATIC int8_t createStubFunctionBlock(FILE *aFile, FILE *aHeader, cfunction_t *a
    fprintf(aFile, "\tcase STUB_CALL_PASS:" NEWLINES);
    fprintf(aFile, "\t\tCU_PASS(\"%s() called.\");"NEWLINES"\t\tbreak;"NEWLINES, aFunction->name);
    fprintf(aFile, "\tdefault:"NEWLINES);
-   fprintf(aFile, "\t\tCU_FAIL_OUTPUT_LESS(\"Invalid STUB_CALL test value: \","STUBPARAMETER_STRUCT_S1"["STUBINSTANCE_S1"]."STUBPARAMETER_CALLTEST_S", \"%%u\");"NEWLINES,
+   fprintf(aFile,
+         "\t\tCU_FAIL_OUTPUT_LESS(\"Invalid STUB_CALL test value: \","STUBPARAMETER_STRUCT_S1"["STUBINSTANCE_S1"]."STUBPARAMETER_CALLTEST_S", \"%%u\");"NEWLINES,
          aFunction->name, aFunction->name);
    fprintf(aFile, "\t\tbreak;"NEWLINES);
    fprintf(aFile, "\t}" NEWLINES);
diff --git a/src/stubser/stubser_loc.h b/src/stubser/stubser_loc.h
index 0809cbe..1d7d678 100644
--- a/src/stubser/stubser_loc.h
+++ b/src/stubser/stubser_loc.h
@@ -44,10 +44,10 @@
 #define STUBINIT_PARAM_RETURN_S "aReturnValue"
 #define STUBINIT_PARAM_POINTERHANDLING_S "aPointerHandling"
 
-#define STUBDEFAULT_VALUE_FUNCTIONPOINTER_S "0x55"
-#define STUBDEFAULT_VALUE_POINTER_S "0x55"
+#define STUBDEFAULT_VALUE_FUNCTIONPOINTER_S "0xAA"
+#define STUBDEFAULT_VALUE_POINTER_S "0xAA"
 #define STUBDEFAULT_VALUE_POINTERSIZE_S "1"
-#define STUBDEFAULT_VALUE_VARIABLE_S "0x55"
+#define STUBDEFAULT_VALUE_VARIABLE_S "0xAA"
 
 #define STUBFUNCTION_USER_INITEXPECTED_S1 "stub_%s_user_initExpected" // stub_testfunction_initExpected
 #define STUBFUNCTION_USER_INITGLOBALS_S1 "stub_%s_user_initGlobals" // stub_testfunction_initGlobals